Browsing NILU Brage by Author "Tichý, Ondřej"
Now showing items 1-6 of 6
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Bayesian inverse modeling and source location of an unintended 131I release in Europe in the fall of 2011
Tichý, Ondřej; Šmídl, Václav; Hofman, Radek; Sindelarova, Katerina; Hýza, Miroslav; Stohl, Andreas (Journal article; Peer reviewed, 2017) -
Decreasing trends of ammonia emissions over Europe seen from remote sensing and inverse modelling
Tichý, Ondřej; Eckhardt, Sabine; Balkanski, Yves; Hauglustaine, Didier; Evangeliou, Nikolaos (Peer reviewed; Journal article, 2023)Ammonia (NH3), a significant precursor of particulate matter, affects not only biodiversity, ecosystems, and soil acidification but also climate and human health. In addition, its concentrations are constantly rising due ... -
LS-APC v1.0: A tuning-free method for the linear inverse problem and its application to source-Term determination
Tichý, Ondřej; Šmídl, Václav; Hofman, Radek; Stohl, Andreas (Journal article; Peer reviewed, 2016)Estimation of pollutant releases into the atmosphere is an important problem in the environmental sciences. It is typically formalized as an inverse problem using a linear model that can explain observable quantities (e.g., ... -
On the tuning of atmospheric inverse methods: comparisons with the European Tracer Experiment (ETEX) and Chernobyl datasets using the atmospheric transport model FLEXPART
Tichý, Ondřej; Ulrych, Lukas; Šmídl, Václav; Evangeliou, Nikolaos; Stohl, Andreas (Peer reviewed; Journal article, 2020)Estimation of the temporal profile of an atmospheric release, also called the source term, is an important problem in environmental sciences. The problem can be formalized as a linear inverse problem wherein the unknown ... -
Real-time measurement of radionuclide concentrations and its impact on inverse modeling of 106Ru release in the fall of 2017
Tichý, Ondřej; Hýza, Miroslav; Evangeliou, Nikolaos; Šmídl, Václav (Peer reviewed; Journal article, 2021)Low concentrations of 106Ru were detected across Europe at the turn of September and October 2017. The origin of 106Ru has still not been confirmed; however, current studies agree that the release occurred probably near ... -
Sources and fate of atmospheric microplastics revealed from inverse and dispersion modelling: From global emissions to deposition
Evangeliou, Nikolaos; Tichý, Ondřej; Eckhardt, Sabine; Zwaaftink, Christine Groot; Brahney, Janice (Peer reviewed; Journal article, 2022)We combine observations from Western USA and inverse modelling to constrain global atmospheric emissions of microplastics (MPs) and microfibers (MFs). The latter are used further to model their global atmospheric dynamics. ...